﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Purdue.Library
{
    public class RandomPassword
    {
        private string[] chars = new string[] { 
            "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", 
            "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", 
            "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" 
        };

        public string Generate(int length)
        {
            Random ran = new Random();
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < length; i++)
            {
                builder.Append(chars[ran.Next(chars.Length)]);
                i++;
            }
            return builder.ToString();
        }

        public string GenerateWithoutNumber(int length)
        {
            Random ran = new Random();
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < length; i++)
            {
                builder.Append(chars[ran.Next(10, chars.Length)]);
                i++;
            }
            return builder.ToString();
        }
    }
}
